Need help with lighting

hi i need help with a small problem.

i am making a macbook pro in blender and for the life of me i can’t seem to get the white line down the screen.

like this 3d model here

i have used a plane with a emisson on it but looks noting the way it should

Could you please share your .blend file and the render?

in real life photography you would use a big white rectangle to create this, you would spend some time to adjust it to the position that the reflection is the way you want

in 3d you would do the same, build an area light and try to position it the way that the reflection on the screen is like you want it

or go the easy way and paint it in after you rendered it